EP 2860201 A1 20150415 - High temperature resistant polyethylene and process for the production thereof
Title (en)
High temperature resistant polyethylene and process for the production thereof
Title (de)
Hochtemperaturbeständiges Polyethylen und Verfahren zu seiner Herstellung
Title (fr)
Polyéthylène résistant aux températures élevées et son procédé de production
Publication
Application
Priority
EP 13004876 A 20131010
Abstract (en)
The present invention is concerned with a polyethylene composition comprising a base resin having a density of more than 952.0 kg/m 3 and equal to or less than 957.0 kg/m 3 , wherein the composition has a melt flow rate MFR 5 of 0.12 to 0.21 g/10min and the polyethylene composition has a polydispersity index PI within the range of higher than 4.9 Pa -1 and equal to or less than 9.0 Pa -1 . Furthermore, the present invention concerns a polyethylene composition obtainable by a multistage process, the multistage process comprising polymerizing ethylene in the presence of a silica supported Ziegler Natta catalyst in a reactor cascade comprising a first loop reactor, a second loop reactor and a gas phase reactor for obtaining the base resin and then extruding the base resin together with stabilizers and carbon black into the polyethylene composition. Furthermore, the present invention relates to an article, such as a pipe, made from the polyethylene composition and the use of the polyethylene composition for the production of such an article.
IPC 8 full level
C08F 2/00 (2006.01); C08L 23/06 (2006.01); F16L 9/12 (2006.01)
CPC (source: EP)
C08F 210/16 (2013.01); C08L 23/06 (2013.01); C08L 2203/18 (2013.01); C08L 2205/025 (2013.01); F16L 9/12 (2013.01)
Citation (applicant)
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Citation (search report)
- [XY] EP 2186833 A1 20100519 - BOREALIS AG [AT]
- [X] EP 2599828 A1 20130605 - BOREALIS AG [AT]
- [X] EP 2570455 A1 20130320 - BOREALIS AG [AT]
- [YD] EP 1146079 A1 20011017 - BOREALIS TECH OY [FI]
- [Y] EP 2583998 A1 20130424 - BOREALIS AG [AT]
- [A] EP 1760096 A1 20070307 - INEOS MFG BELGIUM NV [BE]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2860201 A1 20150415; AU 2014334201 A1 20160121; AU 2014334201 B2 20170316; CN 105658677 A 20160608; CN 105658677 B 20170915; EP 3055335 A1 20160817; EP 3055335 B1 20181212; JP 2016532760 A 20161020; KR 101785881 B1 20171016; KR 20160030981 A 20160321; PL 3055335 T3 20190830; SA 516370680 B1 20180723; WO 2015051880 A1 20150416
DOCDB simple family (application)
EP 13004876 A 20131010; AU 2014334201 A 20140924; CN 201480056064 A 20140924; EP 14776587 A 20140924; EP 2014002589 W 20140924; JP 2016539436 A 20140924; KR 20167003435 A 20140924; PL 14776587 T 20140924; SA 516370680 A 20160306